Figure REF  shows the [C ii] intensity of the Orion Nebula complex per \(1\,\mathrm {km\,s^{-1}}\)  channel in the range \(v_{\mathrm {LSR}}=-9\text{-}19\,\mathrm {km\,s^{-1}}\) . Channel maps of velocity-resolved observations allow to disentangle spatially distinct structures within the line of sight and thus to obtain insight into the global morphology of a region. We can distinguish several components: For \(v_{\mathrm {LSR}}< -2\,\mathrm {km\,s^{-1}}\) , we observe [C ii] emission that fills the space within the shell filaments of the Orion Nebula. This emission is associated with the expanding Veil Shell, that is moving toward us [1]}. The edge-on shell filaments form a coherent structure and are most distinctly visible in the velocity range \(v_{\mathrm {LSR}}=0\text{-}9\,\mathrm {km\,s^{-1}}\) . In the \(v_{\mathrm {LSR}}=8\text{-}12\,\mathrm {km\,s^{-1}}\)  range, the bright OMC1/Huygens Region reveals its structure, studied in detail by [2]}. M43 also becomes apparent in this velocity range. In \(v_{\mathrm {LSR}}=12\text{-}15\,\mathrm {km\,s^{-1}}\) , a structure that seems to be an extension of the Orion Bar becomes visible, that was also noted in optical observations [3]}. Emission contributed by the [\(^{13}\) C ii] \(F=2\text{-}1\)  hyperfine componentThe [\(^{13}\) C ii] line splits into three hyperfine components (the frequency of the [\(^{12}\) C ii] line is 1900.537 GHz and \(\Delta v\)  is given with respect to this frequency, [4]}):
<TABLE> can be discerned in the last two channels, \(v_{\mathrm {LSR}}=17\text{-}19\,\mathrm {km\,s^{-1}}\) , toward the brightest part of the map, that is OMC1 and the bright eastern arm of the Veil Shell, the Eastern Rim. The northern part of the map with NGC 1973, 1975, and 1977, is visible in the range \(v_{\mathrm {LSR}}=10\text{-}14\,\mathrm {km\,s^{-1}}\) , offset by \(\sim 2 \,\mathrm {km\,s^{-1}}\)  from the emission peak of the OMC1 region. Many small-scale structures also possess distinct dynamic morphology, that can be observed in the channel maps, but this is outside the scope of this study.
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